EP1355312A3 - Plattengerät und plattenförmiges Medium - Google Patents

Plattengerät und plattenförmiges Medium Download PDF

Info

Publication number
EP1355312A3
EP1355312A3 EP03250681A EP03250681A EP1355312A3 EP 1355312 A3 EP1355312 A3 EP 1355312A3 EP 03250681 A EP03250681 A EP 03250681A EP 03250681 A EP03250681 A EP 03250681A EP 1355312 A3 EP1355312 A3 EP 1355312A3
Authority
EP
European Patent Office
Prior art keywords
servo signal
servo
disk
signal frequency
area
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03250681A
Other languages
English (en)
French (fr)
Other versions
EP1355312A2 (de
Inventor
Hiroshi c/o Fujitsu Limited Ashikaga
Nobuyuki c/o Fujitsu Limited Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to EP08153318A priority Critical patent/EP1936621A1/de
Publication of EP1355312A2 publication Critical patent/EP1355312A2/de
Publication of EP1355312A3 publication Critical patent/EP1355312A3/de
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
    • G11B21/106—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following on disks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59633—Servo formatting

Landscapes

  • Moving Of The Head To Find And Align With The Track (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)
  • Magnetic Record Carriers (AREA)
EP03250681A 2002-04-18 2003-02-03 Plattengerät und plattenförmiges Medium Withdrawn EP1355312A3 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08153318A EP1936621A1 (de) 2002-04-18 2003-02-03 Plattengerät und plattenförmiges Medium

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002116600A JP4197885B2 (ja) 2002-04-18 2002-04-18 ディスク装置およびディスク媒体
JP2002116600 2002-04-18

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP08153318A Division EP1936621A1 (de) 2002-04-18 2003-02-03 Plattengerät und plattenförmiges Medium

Publications (2)

Publication Number Publication Date
EP1355312A2 EP1355312A2 (de) 2003-10-22
EP1355312A3 true EP1355312A3 (de) 2007-03-28

Family

ID=28672669

Family Applications (2)

Application Number Title Priority Date Filing Date
EP08153318A Withdrawn EP1936621A1 (de) 2002-04-18 2003-02-03 Plattengerät und plattenförmiges Medium
EP03250681A Withdrawn EP1355312A3 (de) 2002-04-18 2003-02-03 Plattengerät und plattenförmiges Medium

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP08153318A Withdrawn EP1936621A1 (de) 2002-04-18 2003-02-03 Plattengerät und plattenförmiges Medium

Country Status (5)

Country Link
US (1) US7012773B2 (de)
EP (2) EP1936621A1 (de)
JP (1) JP4197885B2 (de)
KR (1) KR20030083571A (de)
CN (2) CN101030429A (de)

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US7023631B2 (en) * 2002-11-07 2006-04-04 Seagate Technology Llc Bi-frequency servo pattern
DE102004030268B4 (de) 2003-06-24 2013-02-21 Fuji Electric Co., Ltd Verfahren zum Herstellen eines Halbleiterelements
JP4015123B2 (ja) * 2004-02-25 2007-11-28 株式会社東芝 ディスク装置、サーボパターン書き込み方法
US7372276B2 (en) * 2005-02-16 2008-05-13 Goldak, Inc. Digital locating system and device for underground object detection
JP2007242152A (ja) * 2006-03-09 2007-09-20 Fujitsu Ltd 磁気記録媒体、磁気記録装置及びサーボ復調回路
US20070279782A1 (en) * 2006-05-31 2007-12-06 Rydhan Abdul R Method and apparatus for determining offset between read and write transducers in a disk drive
US7307810B1 (en) * 2006-10-09 2007-12-11 Samsung Electronics Co., Ltd. Method of compensating for track address discontinuity across servo track writing boundary in hard disk drives
KR100871702B1 (ko) * 2007-02-16 2008-12-08 삼성전자주식회사 디스크 영역의 데이터 빈도를 이용하는 ａｃ 소거 주파수설정 방법 및 ａｃ 소거 방법
US7880987B2 (en) * 2007-03-30 2011-02-01 Seagate Technology Llc Media servowriter/certifier
US7715138B1 (en) 2007-11-20 2010-05-11 Western Digital Technologies, Inc. Disk drive estimating a servo zone after synchronously detecting a servo sync mark
US7688540B1 (en) 2007-12-17 2010-03-30 Western Digital Technologies, Inc. Disk drive selecting TPI profile by estimating head geometry
JP4858919B2 (ja) * 2008-05-09 2012-01-18 東芝ストレージデバイス株式会社 記憶装置、記憶装置の制御回路およびサーボライト方式識別方法
US7929238B1 (en) 2008-10-14 2011-04-19 Western Digital Technologies, Inc. Disk drive seeking with a fixed rate clock when crossing servo zones to facilitate zoned servo sectors
US8116023B1 (en) 2008-12-15 2012-02-14 Western Digital Technologies, Inc. Disk drive comprising preamble aligned zoned servo sectors
US7982993B1 (en) 2008-12-19 2011-07-19 Western Digital Technologies, Inc. Disk drive employing different servo TPI to data TPI ratios across the disk surface
US8213106B1 (en) 2009-03-10 2012-07-03 Western Digital Technologies, Inc. Zoned servo system
US8116020B1 (en) 2009-04-21 2012-02-14 Western Digital Technologies, Inc. Disk drive mapping entries of a defect list into clusters
US8031423B1 (en) 2009-06-26 2011-10-04 Western Digital Technologies, Inc. Disk drive generating actual data TPI profile by combining segments of predetermined data TPI profiles
JP2011008897A (ja) * 2009-06-29 2011-01-13 Toshiba Storage Device Corp 磁気ディスク記憶装置および磁気ディスク記憶装置の制御方法
US7961416B2 (en) * 2009-08-11 2011-06-14 Hitachi Global Storage Technologies Netherlands, B.V. Using readback signals to estimate radial location on a rotating storage device
JP5485770B2 (ja) * 2010-03-31 2014-05-07 ダブリュディ・メディア・シンガポール・プライベートリミテッド 磁気ディスク装置
US8630052B1 (en) 2010-09-09 2014-01-14 Western Digital Technologies, Inc. Disk drive calibrating radial density then adjusting linear density to balance off-track read capability
US8363348B2 (en) 2010-10-07 2013-01-29 HGST Netherlands B.V. Patterned media with structured PES servo segments encoding local track position
US8335047B2 (en) 2010-10-07 2012-12-18 HGST Netherlands B.V. Patterned media with offset PES servo segments with length encoded track position
US8630051B2 (en) 2011-07-06 2014-01-14 HGST Netherlands B.V. Patterned media with an alternating series of concentric servo zones and overlap zones
US8625219B2 (en) 2011-07-06 2014-01-07 HGST Netherlands B.V. Patterned media with an alternating series of concentric servo zones and overlap zones
US8531794B2 (en) 2011-07-06 2013-09-10 HGST Netherlands, B.V. Patterned media with an alternating series of concentric servo zones and overlap zones
US8619379B2 (en) 2011-07-06 2013-12-31 HGST Netherlands B.V. Patterned media with an alternating series of concentric servo zones and overlap zones
US8922926B2 (en) 2011-11-21 2014-12-30 Agency for Science, Technology Research Data recording medium and method for generating a reference clock signal
US9336829B2 (en) * 2011-11-21 2016-05-10 Marvell International Ltd. Data recording medium, method for generating a reference clock signal, and data storage device
US8576506B1 (en) 2012-06-21 2013-11-05 Western Digital Technologies, Inc. Disk drive estimating reader/writer gap across servo zones
US8995075B1 (en) 2012-06-21 2015-03-31 Western Digital Technologies, Inc. Disk drive adjusting estimated servo state to compensate for transient when crossing a servo zone boundary
US8724245B1 (en) 2012-06-21 2014-05-13 Western Digital Technologies, Inc. Disk drive employing overlapping servo zones to facilitate servo zone crossing
US8780477B1 (en) 2012-06-21 2014-07-15 Western Digital Technologies, Inc. Disk drive adjusting servo timing to compensate for transient when crossing a servo zone boundary
SG196742A1 (en) 2012-07-20 2014-02-13 Agency Science Tech & Res Recording media, data storage devices, and methods for determining a position error signal in a recording medium
US8743504B1 (en) 2012-07-25 2014-06-03 Western Digital Technologies, Inc. Servoing on zoned concentric servo sectors of a first disk surface to write a spiral servo track to a second disk surface
US9070411B1 (en) * 2013-07-04 2015-06-30 Seagate Technology Llc Writable servo overlap zones
US9082458B1 (en) 2014-03-10 2015-07-14 Western Digital Technologies, Inc. Data storage device balancing and maximizing quality metric when configuring arial density of each disk surface
US9230605B1 (en) 2014-12-01 2016-01-05 Western Digital Technologies, Inc. Data storage device maximizing areal density based on a target quality metric
JP2018156704A (ja) 2017-03-16 2018-10-04 株式会社東芝 磁気ディスク装置
JP2019145187A (ja) * 2018-02-21 2019-08-29 株式会社東芝 磁気ディスク装置および磁気ディスク装置の制御方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05205419A (ja) * 1991-02-25 1993-08-13 Hitachi Ltd 磁気ディスク装置及びサ−ボデ−タの形成方法
US6178056B1 (en) * 1997-03-11 2001-01-23 Western Digital Corporation Disk drive employing state variable trap registers for providing stored servo and user data state variables to sampled-data channel

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
JP3269624B2 (ja) 1989-07-17 2002-03-25 株式会社日立製作所 磁気ディスク装置、磁気ディスクおよびサーボライト装置
JPH0744658B2 (ja) 1989-10-04 1995-05-15 日本アビオニクス株式会社 赤外線カメラのフイルタ切替機構
JP2973247B2 (ja) 1991-04-26 1999-11-08 京セラ株式会社 磁気ディスク装置のヘッド制御方式
JPH0594674A (ja) 1991-09-30 1993-04-16 Toshiba Corp デイスク媒体およびデイスク装置
JPH05174516A (ja) 1991-12-25 1993-07-13 Toshiba Corp 記録媒体およびこの記録媒体を用いた磁気ディスク装置
CN1151078A (zh) * 1994-11-16 1997-06-04 株式会社日立制作所 磁盘装置
JPH08212736A (ja) 1995-02-02 1996-08-20 Toshiba Corp 磁気ディスク装置におけるサーボ信号検出装置及びサーボ信号検出方法
JPH10255416A (ja) 1997-03-12 1998-09-25 Fujitsu Ltd 磁気ディスク装置におけるサーボ復調方法および磁気ディスク装置
US6084738A (en) 1997-08-15 2000-07-04 Seagate Technology, Inc. Writing servo information to a disc drive at a constant density
JP3384728B2 (ja) * 1997-11-12 2003-03-10 松下電器産業株式会社 磁気記録再生装置の製造方法及び磁気記録再生装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05205419A (ja) * 1991-02-25 1993-08-13 Hitachi Ltd 磁気ディスク装置及びサ−ボデ−タの形成方法
US6178056B1 (en) * 1997-03-11 2001-01-23 Western Digital Corporation Disk drive employing state variable trap registers for providing stored servo and user data state variables to sampled-data channel
US6262857B1 (en) * 1997-03-11 2001-07-17 Western Digital Corporation Disk drive including a recording surface employing servo zones with banded data zones

Also Published As

Publication number Publication date
CN1452169A (zh) 2003-10-29
KR20030083571A (ko) 2003-10-30
JP4197885B2 (ja) 2008-12-17
JP2003317412A (ja) 2003-11-07
US7012773B2 (en) 2006-03-14
CN101030429A (zh) 2007-09-05
CN100411045C (zh) 2008-08-13
EP1355312A2 (de) 2003-10-22
EP1936621A1 (de) 2008-06-25
US20030197964A1 (en) 2003-10-23

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